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Finding the Fourth Proportional to 261,466.69, 392,148.39 and 71,878.14

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Solution

The fourth proportional to 261,466.69, 392,148.39 and 71,878.14 is: 107,803.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,466.69 : 392,148.39 = 71,878.14 : x
  2. Step 2: Convert to fraction form
    261,466.69/392,148.39 = 71,878.14/x
  3. Step 3: Cross multiply
    261,466.69x = 392,148.39 × 71,878.14
  4. Step 4: Simplify right side
    261,466.69x = 28,186,894,916.45
  5. Step 5: Solve for x
    x = 28,186,894,916.45/261,466.69
  6. Step 6: Final answer
    x = 107,803.01

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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.