Home / 387,700.08-581,549.40-121,480.98

Finding the Fourth Proportional to 387,700.08, 581,549.40 and 121,480.98

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Solution

The fourth proportional to 387,700.08, 581,549.40 and 121,480.98 is: 182,221.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,700.08 : 581,549.40 = 121,480.98 : x
  2. Step 2: Convert to fraction form
    387,700.08/581,549.40 = 121,480.98/x
  3. Step 3: Cross multiply
    387,700.08x = 581,549.40 × 121,480.98
  4. Step 4: Simplify right side
    387,700.08x = 70,647,191,030.41
  5. Step 5: Solve for x
    x = 70,647,191,030.41/387,700.08
  6. Step 6: Final answer
    x = 182,221.24

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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.