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Finding the Fourth Proportional to 365,010.50, 547,155.90 and 128,187.10

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Solution

The fourth proportional to 365,010.50, 547,155.90 and 128,187.10 is: 192,154.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,010.50 : 547,155.90 = 128,187.10 : x
  2. Step 2: Convert to fraction form
    365,010.50/547,155.90 = 128,187.10/x
  3. Step 3: Cross multiply
    365,010.50x = 547,155.90 × 128,187.10
  4. Step 4: Simplify right side
    365,010.50x = 70,138,328,068.89
  5. Step 5: Solve for x
    x = 70,138,328,068.89/365,010.50
  6. Step 6: Final answer
    x = 192,154.28

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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.