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Finding the Fourth Proportional to 495,220.60, 742,830.90 and 121,243.60

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Solution

The fourth proportional to 495,220.60, 742,830.90 and 121,243.60 is: 181,865.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,220.60 : 742,830.90 = 121,243.60 : x
  2. Step 2: Convert to fraction form
    495,220.60/742,830.90 = 121,243.60/x
  3. Step 3: Cross multiply
    495,220.60x = 742,830.90 × 121,243.60
  4. Step 4: Simplify right side
    495,220.60x = 90,063,492,507.24
  5. Step 5: Solve for x
    x = 90,063,492,507.24/495,220.60
  6. Step 6: Final answer
    x = 181,865.40

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Similar ratio
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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.