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Finding the Fourth Proportional to 495,291.60, 742,937.40 and 121,314.60

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Solution

The fourth proportional to 495,291.60, 742,937.40 and 121,314.60 is: 181,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,291.60 : 742,937.40 = 121,314.60 : x
  2. Step 2: Convert to fraction form
    495,291.60/742,937.40 = 121,314.60/x
  3. Step 3: Cross multiply
    495,291.60x = 742,937.40 × 121,314.60
  4. Step 4: Simplify right side
    495,291.60x = 90,129,153,506.04
  5. Step 5: Solve for x
    x = 90,129,153,506.04/495,291.60
  6. Step 6: Final answer
    x = 181,971.90

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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.