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Finding the Fourth Proportional to 572,072.30, 858,108.45 and 145,607.30

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Solution

The fourth proportional to 572,072.30, 858,108.45 and 145,607.30 is: 218,410.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,072.30 : 858,108.45 = 145,607.30 : x
  2. Step 2: Convert to fraction form
    572,072.30/858,108.45 = 145,607.30/x
  3. Step 3: Cross multiply
    572,072.30x = 858,108.45 × 145,607.30
  4. Step 4: Simplify right side
    572,072.30x = 124,946,854,511.69
  5. Step 5: Solve for x
    x = 124,946,854,511.69/572,072.30
  6. Step 6: Final answer
    x = 218,410.95

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.