Home / 393,416,926.07-542,962,966.76-223,912,378.60

Finding the Fourth Proportional to 393,416,926.07, 542,962,966.76 and 223,912,378.60

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Solution

The fourth proportional to 393,416,926.07, 542,962,966.76 and 223,912,378.60 is: 309,026,178.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,416,926.07 : 542,962,966.76 = 223,912,378.60 : x
  2. Step 2: Convert to fraction form
    393,416,926.07/542,962,966.76 = 223,912,378.60/x
  3. Step 3: Cross multiply
    393,416,926.07x = 542,962,966.76 × 223,912,378.60
  4. Step 4: Simplify right side
    393,416,926.07x = 121,576,129,378,944,336
  5. Step 5: Solve for x
    x = 121,576,129,378,944,336/393,416,926.07
  6. Step 6: Final answer
    x = 309,026,178.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.