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Finding the Fourth Proportional to 345,070.48, 517,658 and 108,390.92

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Solution

The fourth proportional to 345,070.48, 517,658 and 108,390.92 is: 162,602.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,070.48 : 517,658 = 108,390.92 : x
  2. Step 2: Convert to fraction form
    345,070.48/517,658 = 108,390.92/x
  3. Step 3: Cross multiply
    345,070.48x = 517,658 × 108,390.92
  4. Step 4: Simplify right side
    345,070.48x = 56,109,426,865.36
  5. Step 5: Solve for x
    x = 56,109,426,865.36/345,070.48
  6. Step 6: Final answer
    x = 162,602.80

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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.