Home / 400,947.72-553,307.65-239,802.76

Finding the Fourth Proportional to 400,947.72, 553,307.65 and 239,802.76

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Solution

The fourth proportional to 400,947.72, 553,307.65 and 239,802.76 is: 330,927.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,947.72 : 553,307.65 = 239,802.76 : x
  2. Step 2: Convert to fraction form
    400,947.72/553,307.65 = 239,802.76/x
  3. Step 3: Cross multiply
    400,947.72x = 553,307.65 × 239,802.76
  4. Step 4: Simplify right side
    400,947.72x = 132,684,701,599.11
  5. Step 5: Solve for x
    x = 132,684,701,599.11/400,947.72
  6. Step 6: Final answer
    x = 330,927.69

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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.