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Finding the Fourth Proportional to 346,784.80, 520,177.20 and 169,637.80

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Solution

The fourth proportional to 346,784.80, 520,177.20 and 169,637.80 is: 254,456.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,784.80 : 520,177.20 = 169,637.80 : x
  2. Step 2: Convert to fraction form
    346,784.80/520,177.20 = 169,637.80/x
  3. Step 3: Cross multiply
    346,784.80x = 520,177.20 × 169,637.80
  4. Step 4: Simplify right side
    346,784.80x = 88,241,715,818.16
  5. Step 5: Solve for x
    x = 88,241,715,818.16/346,784.80
  6. Step 6: Final answer
    x = 254,456.70

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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.