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Finding the Fourth Proportional to 476,888.88, 715,444.04 and 139,915.92

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Solution

The fourth proportional to 476,888.88, 715,444.04 and 139,915.92 is: 209,906.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,888.88 : 715,444.04 = 139,915.92 : x
  2. Step 2: Convert to fraction form
    476,888.88/715,444.04 = 139,915.92/x
  3. Step 3: Cross multiply
    476,888.88x = 715,444.04 × 139,915.92
  4. Step 4: Simplify right side
    476,888.88x = 100,102,011,065.12
  5. Step 5: Solve for x
    x = 100,102,011,065.12/476,888.88
  6. Step 6: Final answer
    x = 209,906.36

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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.