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Finding the Fourth Proportional to 371,421.80, 557,066.82 and 168,970.86

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Solution

The fourth proportional to 371,421.80, 557,066.82 and 168,970.86 is: 253,426.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,421.80 : 557,066.82 = 168,970.86 : x
  2. Step 2: Convert to fraction form
    371,421.80/557,066.82 = 168,970.86/x
  3. Step 3: Cross multiply
    371,421.80x = 557,066.82 × 168,970.86
  4. Step 4: Simplify right side
    371,421.80x = 94,128,059,652.87
  5. Step 5: Solve for x
    x = 94,128,059,652.87/371,421.80
  6. Step 6: Final answer
    x = 253,426.32

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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.