Home / 369,112.40-553,639.80-144,429.20

Finding the Fourth Proportional to 369,112.40, 553,639.80 and 144,429.20

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Solution

The fourth proportional to 369,112.40, 553,639.80 and 144,429.20 is: 216,632.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,112.40 : 553,639.80 = 144,429.20 : x
  2. Step 2: Convert to fraction form
    369,112.40/553,639.80 = 144,429.20/x
  3. Step 3: Cross multiply
    369,112.40x = 553,639.80 × 144,429.20
  4. Step 4: Simplify right side
    369,112.40x = 79,961,753,402.16
  5. Step 5: Solve for x
    x = 79,961,753,402.16/369,112.40
  6. Step 6: Final answer
    x = 216,632.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.