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Finding the Fourth Proportional to 486,872.66, 671,769.13 and 282,802.32

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Solution

The fourth proportional to 486,872.66, 671,769.13 and 282,802.32 is: 390,200.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,872.66 : 671,769.13 = 282,802.32 : x
  2. Step 2: Convert to fraction form
    486,872.66/671,769.13 = 282,802.32/x
  3. Step 3: Cross multiply
    486,872.66x = 671,769.13 × 282,802.32
  4. Step 4: Simplify right side
    486,872.66x = 189,977,868,468.38
  5. Step 5: Solve for x
    x = 189,977,868,468.38/486,872.66
  6. Step 6: Final answer
    x = 390,200.32

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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.