Home / 287,754,771.72-431,446,578.98-112,895,477.76

Finding the Fourth Proportional to 287,754,771.72, 431,446,578.98 and 112,895,477.76

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Solution

The fourth proportional to 287,754,771.72, 431,446,578.98 and 112,895,477.76 is: 169,270,408.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,754,771.72 : 431,446,578.98 = 112,895,477.76 : x
  2. Step 2: Convert to fraction form
    287,754,771.72/431,446,578.98 = 112,895,477.76/x
  3. Step 3: Cross multiply
    287,754,771.72x = 431,446,578.98 × 112,895,477.76
  4. Step 4: Simplify right side
    287,754,771.72x = 48,708,367,659,281,024
  5. Step 5: Solve for x
    x = 48,708,367,659,281,024/287,754,771.72
  6. Step 6: Final answer
    x = 169,270,408.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.