Home / 278,931.61-384,923.70-151,607.20

Finding the Fourth Proportional to 278,931.61, 384,923.70 and 151,607.20

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Solution

The fourth proportional to 278,931.61, 384,923.70 and 151,607.20 is: 209,216.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,931.61 : 384,923.70 = 151,607.20 : x
  2. Step 2: Convert to fraction form
    278,931.61/384,923.70 = 151,607.20/x
  3. Step 3: Cross multiply
    278,931.61x = 384,923.70 × 151,607.20
  4. Step 4: Simplify right side
    278,931.61x = 58,357,204,370.64
  5. Step 5: Solve for x
    x = 58,357,204,370.64/278,931.61
  6. Step 6: Final answer
    x = 209,216.89

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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.