Home / 361,931.79-542,778.81-121,981.32

Finding the Fourth Proportional to 361,931.79, 542,778.81 and 121,981.32

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Solution

The fourth proportional to 361,931.79, 542,778.81 and 121,981.32 is: 182,931.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,931.79 : 542,778.81 = 121,981.32 : x
  2. Step 2: Convert to fraction form
    361,931.79/542,778.81 = 121,981.32/x
  3. Step 3: Cross multiply
    361,931.79x = 542,778.81 × 121,981.32
  4. Step 4: Simplify right side
    361,931.79x = 66,208,875,711.83
  5. Step 5: Solve for x
    x = 66,208,875,711.83/361,931.79
  6. Step 6: Final answer
    x = 182,931.92

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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.