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Finding the Fourth Proportional to 572,071.80, 858,107.70 and 145,606.80

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Solution

The fourth proportional to 572,071.80, 858,107.70 and 145,606.80 is: 218,410.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,071.80 : 858,107.70 = 145,606.80 : x
  2. Step 2: Convert to fraction form
    572,071.80/858,107.70 = 145,606.80/x
  3. Step 3: Cross multiply
    572,071.80x = 858,107.70 × 145,606.80
  4. Step 4: Simplify right side
    572,071.80x = 124,946,316,252.36
  5. Step 5: Solve for x
    x = 124,946,316,252.36/572,071.80
  6. Step 6: Final answer
    x = 218,410.20

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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.