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Finding the Fourth Proportional to 518,902.48, 778,353.72 and 238,655.44

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Solution

The fourth proportional to 518,902.48, 778,353.72 and 238,655.44 is: 357,983.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,902.48 : 778,353.72 = 238,655.44 : x
  2. Step 2: Convert to fraction form
    518,902.48/778,353.72 = 238,655.44/x
  3. Step 3: Cross multiply
    518,902.48x = 778,353.72 × 238,655.44
  4. Step 4: Simplify right side
    518,902.48x = 185,758,349,522.24
  5. Step 5: Solve for x
    x = 185,758,349,522.24/518,902.48
  6. Step 6: Final answer
    x = 357,983.16

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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.