Home / 420,073,155.72-579,733,005.72-231,937,720.02

Finding the Fourth Proportional to 420,073,155.72, 579,733,005.72 and 231,937,720.02

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Solution

The fourth proportional to 420,073,155.72, 579,733,005.72 and 231,937,720.02 is: 320,091,750.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,073,155.72 : 579,733,005.72 = 231,937,720.02 : x
  2. Step 2: Convert to fraction form
    420,073,155.72/579,733,005.72 = 231,937,720.02/x
  3. Step 3: Cross multiply
    420,073,155.72x = 579,733,005.72 × 231,937,720.02
  4. Step 4: Simplify right side
    420,073,155.72x = 134,461,951,567,038,432
  5. Step 5: Solve for x
    x = 134,461,951,567,038,432/420,073,155.72
  6. Step 6: Final answer
    x = 320,091,750.06

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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.