Home / 278,819,390.40-418,229,085.60-163,859,006.40

Finding the Fourth Proportional to 278,819,390.40, 418,229,085.60 and 163,859,006.40

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Solution

The fourth proportional to 278,819,390.40, 418,229,085.60 and 163,859,006.40 is: 245,788,509.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,819,390.40 : 418,229,085.60 = 163,859,006.40 : x
  2. Step 2: Convert to fraction form
    278,819,390.40/418,229,085.60 = 163,859,006.40/x
  3. Step 3: Cross multiply
    278,819,390.40x = 418,229,085.60 × 163,859,006.40
  4. Step 4: Simplify right side
    278,819,390.40x = 68,530,602,413,996,552
  5. Step 5: Solve for x
    x = 68,530,602,413,996,552/278,819,390.40
  6. Step 6: Final answer
    x = 245,788,509.60

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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.