Home / 278,541,818.22-384,391,703.80-153,105,626.76

Finding the Fourth Proportional to 278,541,818.22, 384,391,703.80 and 153,105,626.76

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Solution

The fourth proportional to 278,541,818.22, 384,391,703.80 and 153,105,626.76 is: 211,287,960.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,541,818.22 : 384,391,703.80 = 153,105,626.76 : x
  2. Step 2: Convert to fraction form
    278,541,818.22/384,391,703.80 = 153,105,626.76/x
  3. Step 3: Cross multiply
    278,541,818.22x = 384,391,703.80 × 153,105,626.76
  4. Step 4: Simplify right side
    278,541,818.22x = 58,852,532,731,643,272
  5. Step 5: Solve for x
    x = 58,852,532,731,643,272/278,541,818.22
  6. Step 6: Final answer
    x = 211,287,960.67

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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.