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Finding the Fourth Proportional to 155,307.60, 232,846.20 and 66,488.40

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Solution

The fourth proportional to 155,307.60, 232,846.20 and 66,488.40 is: 99,683.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,307.60 : 232,846.20 = 66,488.40 : x
  2. Step 2: Convert to fraction form
    155,307.60/232,846.20 = 66,488.40/x
  3. Step 3: Cross multiply
    155,307.60x = 232,846.20 × 66,488.40
  4. Step 4: Simplify right side
    155,307.60x = 15,481,571,284.08
  5. Step 5: Solve for x
    x = 15,481,571,284.08/155,307.60
  6. Step 6: Final answer
    x = 99,683.28

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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.