Home / 278,695,038.32-384,577,366.56-154,928,178.80

Finding the Fourth Proportional to 278,695,038.32, 384,577,366.56 and 154,928,178.80

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Solution

The fourth proportional to 278,695,038.32, 384,577,366.56 and 154,928,178.80 is: 213,788,775.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,695,038.32 : 384,577,366.56 = 154,928,178.80 : x
  2. Step 2: Convert to fraction form
    278,695,038.32/384,577,366.56 = 154,928,178.80/x
  3. Step 3: Cross multiply
    278,695,038.32x = 384,577,366.56 × 154,928,178.80
  4. Step 4: Simplify right side
    278,695,038.32x = 59,581,871,008,840,824
  5. Step 5: Solve for x
    x = 59,581,871,008,840,824/278,695,038.32
  6. Step 6: Final answer
    x = 213,788,775.60

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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.