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Finding the Fourth Proportional to 402,885.72, 556,126.91 and 239,541.84

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Solution

The fourth proportional to 402,885.72, 556,126.91 and 239,541.84 is: 330,653.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,885.72 : 556,126.91 = 239,541.84 : x
  2. Step 2: Convert to fraction form
    402,885.72/556,126.91 = 239,541.84/x
  3. Step 3: Cross multiply
    402,885.72x = 556,126.91 × 239,541.84
  4. Step 4: Simplify right side
    402,885.72x = 133,215,663,294.91
  5. Step 5: Solve for x
    x = 133,215,663,294.91/402,885.72
  6. Step 6: Final answer
    x = 330,653.72

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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.