Home / 278,646.81-384,534.06-157,811.58

Finding the Fourth Proportional to 278,646.81, 384,534.06 and 157,811.58

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Solution

The fourth proportional to 278,646.81, 384,534.06 and 157,811.58 is: 217,780.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,646.81 : 384,534.06 = 157,811.58 : x
  2. Step 2: Convert to fraction form
    278,646.81/384,534.06 = 157,811.58/x
  3. Step 3: Cross multiply
    278,646.81x = 384,534.06 × 157,811.58
  4. Step 4: Simplify right side
    278,646.81x = 60,683,927,572.41
  5. Step 5: Solve for x
    x = 60,683,927,572.41/278,646.81
  6. Step 6: Final answer
    x = 217,780.81

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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.