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Finding the Fourth Proportional to 438,312.80, 657,469.20 and 227,923.40

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Solution

The fourth proportional to 438,312.80, 657,469.20 and 227,923.40 is: 341,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,312.80 : 657,469.20 = 227,923.40 : x
  2. Step 2: Convert to fraction form
    438,312.80/657,469.20 = 227,923.40/x
  3. Step 3: Cross multiply
    438,312.80x = 657,469.20 × 227,923.40
  4. Step 4: Simplify right side
    438,312.80x = 149,852,615,459.28
  5. Step 5: Solve for x
    x = 149,852,615,459.28/438,312.80
  6. Step 6: Final answer
    x = 341,885.10

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1.5x scale

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.