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Finding the Fourth Proportional to 478,007.15, 717,133.75 and 141,034.19

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Solution

The fourth proportional to 478,007.15, 717,133.75 and 141,034.19 is: 211,587.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,007.15 : 717,133.75 = 141,034.19 : x
  2. Step 2: Convert to fraction form
    478,007.15/717,133.75 = 141,034.19/x
  3. Step 3: Cross multiply
    478,007.15x = 717,133.75 × 141,034.19
  4. Step 4: Simplify right side
    478,007.15x = 101,140,373,614.66
  5. Step 5: Solve for x
    x = 101,140,373,614.66/478,007.15
  6. Step 6: Final answer
    x = 211,587.58

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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.