Home / 258,977.60-387,688.80-153,742.40

Finding the Fourth Proportional to 258,977.60, 387,688.80 and 153,742.40

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Solution

The fourth proportional to 258,977.60, 387,688.80 and 153,742.40 is: 230,151.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,977.60 : 387,688.80 = 153,742.40 : x
  2. Step 2: Convert to fraction form
    258,977.60/387,688.80 = 153,742.40/x
  3. Step 3: Cross multiply
    258,977.60x = 387,688.80 × 153,742.40
  4. Step 4: Simplify right side
    258,977.60x = 59,604,206,565.12
  5. Step 5: Solve for x
    x = 59,604,206,565.12/258,977.60
  6. Step 6: Final answer
    x = 230,151.98

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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.