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Finding the Fourth Proportional to 356,697.60, 535,047.36 and 90,458.28

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Solution

The fourth proportional to 356,697.60, 535,047.36 and 90,458.28 is: 135,687.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,697.60 : 535,047.36 = 90,458.28 : x
  2. Step 2: Convert to fraction form
    356,697.60/535,047.36 = 90,458.28/x
  3. Step 3: Cross multiply
    356,697.60x = 535,047.36 × 90,458.28
  4. Step 4: Simplify right side
    356,697.60x = 48,399,463,904.14
  5. Step 5: Solve for x
    x = 48,399,463,904.14/356,697.60
  6. Step 6: Final answer
    x = 135,687.66

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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.