Home / 418,970,141.28-578,196,731.52-233,331,156.72

Finding the Fourth Proportional to 418,970,141.28, 578,196,731.52 and 233,331,156.72

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Solution

The fourth proportional to 418,970,141.28, 578,196,731.52 and 233,331,156.72 is: 322,006,985.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,970,141.28 : 578,196,731.52 = 233,331,156.72 : x
  2. Step 2: Convert to fraction form
    418,970,141.28/578,196,731.52 = 233,331,156.72/x
  3. Step 3: Cross multiply
    418,970,141.28x = 578,196,731.52 × 233,331,156.72
  4. Step 4: Simplify right side
    418,970,141.28x = 134,911,312,177,284,880
  5. Step 5: Solve for x
    x = 134,911,312,177,284,880/418,970,141.28
  6. Step 6: Final answer
    x = 322,006,985.43

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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.