Home / 400,947.75-553,307.70-239,802.80

Finding the Fourth Proportional to 400,947.75, 553,307.70 and 239,802.80

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Solution

The fourth proportional to 400,947.75, 553,307.70 and 239,802.80 is: 330,927.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,947.75 : 553,307.70 = 239,802.80 : x
  2. Step 2: Convert to fraction form
    400,947.75/553,307.70 = 239,802.80/x
  3. Step 3: Cross multiply
    400,947.75x = 553,307.70 × 239,802.80
  4. Step 4: Simplify right side
    400,947.75x = 132,684,732,955.02
  5. Step 5: Solve for x
    x = 132,684,732,955.02/400,947.75
  6. Step 6: Final answer
    x = 330,927.74

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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.