Home / 393,416,956.73-542,963,007.90-223,912,407.08

Finding the Fourth Proportional to 393,416,956.73, 542,963,007.90 and 223,912,407.08

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Solution

The fourth proportional to 393,416,956.73, 542,963,007.90 and 223,912,407.08 is: 309,026,217.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,416,956.73 : 542,963,007.90 = 223,912,407.08 : x
  2. Step 2: Convert to fraction form
    393,416,956.73/542,963,007.90 = 223,912,407.08/x
  3. Step 3: Cross multiply
    393,416,956.73x = 542,963,007.90 × 223,912,407.08
  4. Step 4: Simplify right side
    393,416,956.73x = 121,576,154,054,286,064
  5. Step 5: Solve for x
    x = 121,576,154,054,286,064/393,416,956.73
  6. Step 6: Final answer
    x = 309,026,217.54

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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.