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Finding the Fourth Proportional to 478,009.65, 717,137.51 and 141,036.69

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Solution

The fourth proportional to 478,009.65, 717,137.51 and 141,036.69 is: 211,591.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,009.65 : 717,137.51 = 141,036.69 : x
  2. Step 2: Convert to fraction form
    478,009.65/717,137.51 = 141,036.69/x
  3. Step 3: Cross multiply
    478,009.65x = 717,137.51 × 141,036.69
  4. Step 4: Simplify right side
    478,009.65x = 101,142,700,685.24
  5. Step 5: Solve for x
    x = 101,142,700,685.24/478,009.65
  6. Step 6: Final answer
    x = 211,591.34

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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.