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Finding the Fourth Proportional to 354,671.40, 532,055.70 and 129,977.40

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Solution

The fourth proportional to 354,671.40, 532,055.70 and 129,977.40 is: 194,983.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,671.40 : 532,055.70 = 129,977.40 : x
  2. Step 2: Convert to fraction form
    354,671.40/532,055.70 = 129,977.40/x
  3. Step 3: Cross multiply
    354,671.40x = 532,055.70 × 129,977.40
  4. Step 4: Simplify right side
    354,671.40x = 69,155,216,541.18
  5. Step 5: Solve for x
    x = 69,155,216,541.18/354,671.40
  6. Step 6: Final answer
    x = 194,983.91

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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.