Home / 418,970,142.28-578,196,732.90-233,331,157.72

Finding the Fourth Proportional to 418,970,142.28, 578,196,732.90 and 233,331,157.72

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Solution

The fourth proportional to 418,970,142.28, 578,196,732.90 and 233,331,157.72 is: 322,006,986.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,970,142.28 : 578,196,732.90 = 233,331,157.72 : x
  2. Step 2: Convert to fraction form
    418,970,142.28/578,196,732.90 = 233,331,157.72/x
  3. Step 3: Cross multiply
    418,970,142.28x = 578,196,732.90 × 233,331,157.72
  4. Step 4: Simplify right side
    418,970,142.28x = 134,911,313,077,478,608
  5. Step 5: Solve for x
    x = 134,911,313,077,478,608/418,970,142.28
  6. Step 6: Final answer
    x = 322,006,986.81

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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.