Home / 278,832,279.84-384,786,422.70-153,381,781.32

Finding the Fourth Proportional to 278,832,279.84, 384,786,422.70 and 153,381,781.32

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Solution

The fourth proportional to 278,832,279.84, 384,786,422.70 and 153,381,781.32 is: 211,665,690.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,832,279.84 : 384,786,422.70 = 153,381,781.32 : x
  2. Step 2: Convert to fraction form
    278,832,279.84/384,786,422.70 = 153,381,781.32/x
  3. Step 3: Cross multiply
    278,832,279.84x = 384,786,422.70 × 153,381,781.32
  4. Step 4: Simplify right side
    278,832,279.84x = 59,019,226,941,476,480
  5. Step 5: Solve for x
    x = 59,019,226,941,476,480/278,832,279.84
  6. Step 6: Final answer
    x = 211,665,690.13

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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.