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Finding the Fourth Proportional to 354,812.40, 532,364.40 and 130,280.40

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Solution

The fourth proportional to 354,812.40, 532,364.40 and 130,280.40 is: 195,474.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,812.40 : 532,364.40 = 130,280.40 : x
  2. Step 2: Convert to fraction form
    354,812.40/532,364.40 = 130,280.40/x
  3. Step 3: Cross multiply
    354,812.40x = 532,364.40 × 130,280.40
  4. Step 4: Simplify right side
    354,812.40x = 69,356,646,977.76
  5. Step 5: Solve for x
    x = 69,356,646,977.76/354,812.40
  6. Step 6: Final answer
    x = 195,474.14

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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.