Home / 400,946.72-553,306.28-239,801.76

Finding the Fourth Proportional to 400,946.72, 553,306.28 and 239,801.76

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Solution

The fourth proportional to 400,946.72, 553,306.28 and 239,801.76 is: 330,926.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,946.72 : 553,306.28 = 239,801.76 : x
  2. Step 2: Convert to fraction form
    400,946.72/553,306.28 = 239,801.76/x
  3. Step 3: Cross multiply
    400,946.72x = 553,306.28 × 239,801.76
  4. Step 4: Simplify right side
    400,946.72x = 132,683,818,564.04
  5. Step 5: Solve for x
    x = 132,683,818,564.04/400,946.72
  6. Step 6: Final answer
    x = 330,926.31

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1.5x scale

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.