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Finding the Fourth Proportional to 354,815.40, 532,368.90 and 130,283.40

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Solution

The fourth proportional to 354,815.40, 532,368.90 and 130,283.40 is: 195,478.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,815.40 : 532,368.90 = 130,283.40 : x
  2. Step 2: Convert to fraction form
    354,815.40/532,368.90 = 130,283.40/x
  3. Step 3: Cross multiply
    354,815.40x = 532,368.90 × 130,283.40
  4. Step 4: Simplify right side
    354,815.40x = 69,358,830,346.26
  5. Step 5: Solve for x
    x = 69,358,830,346.26/354,815.40
  6. Step 6: Final answer
    x = 195,478.64

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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.