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Finding the Fourth Proportional to 518,316.17, 715,031.75 and 303,323.13

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Solution

The fourth proportional to 518,316.17, 715,031.75 and 303,323.13 is: 418,442.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,316.17 : 715,031.75 = 303,323.13 : x
  2. Step 2: Convert to fraction form
    518,316.17/715,031.75 = 303,323.13/x
  3. Step 3: Cross multiply
    518,316.17x = 715,031.75 × 303,323.13
  4. Step 4: Simplify right side
    518,316.17x = 216,885,669,217.69
  5. Step 5: Solve for x
    x = 216,885,669,217.69/518,316.17
  6. Step 6: Final answer
    x = 418,442.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.