Home / 278,886,941.22-418,381,478.30-115,035,312

Finding the Fourth Proportional to 278,886,941.22, 418,381,478.30 and 115,035,312

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Solution

The fourth proportional to 278,886,941.22, 418,381,478.30 and 115,035,312 is: 172,574,031.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,886,941.22 : 418,381,478.30 = 115,035,312 : x
  2. Step 2: Convert to fraction form
    278,886,941.22/418,381,478.30 = 115,035,312/x
  3. Step 3: Cross multiply
    278,886,941.22x = 418,381,478.30 × 115,035,312
  4. Step 4: Simplify right side
    278,886,941.22x = 48,128,643,891,261,728
  5. Step 5: Solve for x
    x = 48,128,643,891,261,728/278,886,941.22
  6. Step 6: Final answer
    x = 172,574,031.90

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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.