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Finding the Fourth Proportional to 257,380.59, 385,993.50 and 97,402.91

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Solution

The fourth proportional to 257,380.59, 385,993.50 and 97,402.91 is: 146,075.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,380.59 : 385,993.50 = 97,402.91 : x
  2. Step 2: Convert to fraction form
    257,380.59/385,993.50 = 97,402.91/x
  3. Step 3: Cross multiply
    257,380.59x = 385,993.50 × 97,402.91
  4. Step 4: Simplify right side
    257,380.59x = 37,596,888,393.75
  5. Step 5: Solve for x
    x = 37,596,888,393.75/257,380.59
  6. Step 6: Final answer
    x = 146,075.07

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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.