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Finding the Fourth Proportional to 478,497.48, 717,069.15 and 265,359.14

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Solution

The fourth proportional to 478,497.48, 717,069.15 and 265,359.14 is: 397,663.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,497.48 : 717,069.15 = 265,359.14 : x
  2. Step 2: Convert to fraction form
    478,497.48/717,069.15 = 265,359.14/x
  3. Step 3: Cross multiply
    478,497.48x = 717,069.15 × 265,359.14
  4. Step 4: Simplify right side
    478,497.48x = 190,280,849,379.19
  5. Step 5: Solve for x
    x = 190,280,849,379.19/478,497.48
  6. Step 6: Final answer
    x = 397,663.22

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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.