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Finding the Fourth Proportional to 356,875.20, 535,312.80 and 146,404.80

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Solution

The fourth proportional to 356,875.20, 535,312.80 and 146,404.80 is: 219,607.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,875.20 : 535,312.80 = 146,404.80 : x
  2. Step 2: Convert to fraction form
    356,875.20/535,312.80 = 146,404.80/x
  3. Step 3: Cross multiply
    356,875.20x = 535,312.80 × 146,404.80
  4. Step 4: Simplify right side
    356,875.20x = 78,372,363,421.44
  5. Step 5: Solve for x
    x = 78,372,363,421.44/356,875.20
  6. Step 6: Final answer
    x = 219,607.20

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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.