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Finding the Fourth Proportional to 354,840.40, 532,406.40 and 130,308.40

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Solution

The fourth proportional to 354,840.40, 532,406.40 and 130,308.40 is: 195,516.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,840.40 : 532,406.40 = 130,308.40 : x
  2. Step 2: Convert to fraction form
    354,840.40/532,406.40 = 130,308.40/x
  3. Step 3: Cross multiply
    354,840.40x = 532,406.40 × 130,308.40
  4. Step 4: Simplify right side
    354,840.40x = 69,377,026,133.76
  5. Step 5: Solve for x
    x = 69,377,026,133.76/354,840.40
  6. Step 6: Final answer
    x = 195,516.14

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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.