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Finding the Fourth Proportional to 487,999.40, 732,119.10 and 168,156.20

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Solution

The fourth proportional to 487,999.40, 732,119.10 and 168,156.20 is: 252,275.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,999.40 : 732,119.10 = 168,156.20 : x
  2. Step 2: Convert to fraction form
    487,999.40/732,119.10 = 168,156.20/x
  3. Step 3: Cross multiply
    487,999.40x = 732,119.10 × 168,156.20
  4. Step 4: Simplify right side
    487,999.40x = 123,110,365,803.42
  5. Step 5: Solve for x
    x = 123,110,365,803.42/487,999.40
  6. Step 6: Final answer
    x = 252,275.65

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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.