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Finding the Fourth Proportional to 310,363.12, 465,535.46 and 85,737.06

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Solution

The fourth proportional to 310,363.12, 465,535.46 and 85,737.06 is: 128,603.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,363.12 : 465,535.46 = 85,737.06 : x
  2. Step 2: Convert to fraction form
    310,363.12/465,535.46 = 85,737.06/x
  3. Step 3: Cross multiply
    310,363.12x = 465,535.46 × 85,737.06
  4. Step 4: Simplify right side
    310,363.12x = 39,913,641,666.15
  5. Step 5: Solve for x
    x = 39,913,641,666.15/310,363.12
  6. Step 6: Final answer
    x = 128,603.04

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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.