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Finding the Fourth Proportional to 357,307.20, 535,756.68 and 146,772

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Solution

The fourth proportional to 357,307.20, 535,756.68 and 146,772 is: 220,074.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,307.20 : 535,756.68 = 146,772 : x
  2. Step 2: Convert to fraction form
    357,307.20/535,756.68 = 146,772/x
  3. Step 3: Cross multiply
    357,307.20x = 535,756.68 × 146,772
  4. Step 4: Simplify right side
    357,307.20x = 78,634,079,436.96
  5. Step 5: Solve for x
    x = 78,634,079,436.96/357,307.20
  6. Step 6: Final answer
    x = 220,074.15

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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.