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Finding the Fourth Proportional to 536,915.09, 740,898.73 and 316,117.28

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Solution

The fourth proportional to 536,915.09, 740,898.73 and 316,117.28 is: 436,215.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,915.09 : 740,898.73 = 316,117.28 : x
  2. Step 2: Convert to fraction form
    536,915.09/740,898.73 = 316,117.28/x
  3. Step 3: Cross multiply
    536,915.09x = 740,898.73 × 316,117.28
  4. Step 4: Simplify right side
    536,915.09x = 234,210,893,530.45
  5. Step 5: Solve for x
    x = 234,210,893,530.45/536,915.09
  6. Step 6: Final answer
    x = 436,215.89

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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.