Home / 438,331.15-657,332.70-153,911.80

Finding the Fourth Proportional to 438,331.15, 657,332.70 and 153,911.80

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Solution

The fourth proportional to 438,331.15, 657,332.70 and 153,911.80 is: 230,810.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,331.15 : 657,332.70 = 153,911.80 : x
  2. Step 2: Convert to fraction form
    438,331.15/657,332.70 = 153,911.80/x
  3. Step 3: Cross multiply
    438,331.15x = 657,332.70 × 153,911.80
  4. Step 4: Simplify right side
    438,331.15x = 101,171,259,055.86
  5. Step 5: Solve for x
    x = 101,171,259,055.86/438,331.15
  6. Step 6: Final answer
    x = 230,810.11

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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.