Home / 369,111.90-553,639.05-144,428.70

Finding the Fourth Proportional to 369,111.90, 553,639.05 and 144,428.70

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Solution

The fourth proportional to 369,111.90, 553,639.05 and 144,428.70 is: 216,631.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,111.90 : 553,639.05 = 144,428.70 : x
  2. Step 2: Convert to fraction form
    369,111.90/553,639.05 = 144,428.70/x
  3. Step 3: Cross multiply
    369,111.90x = 553,639.05 × 144,428.70
  4. Step 4: Simplify right side
    369,111.90x = 79,961,368,260.74
  5. Step 5: Solve for x
    x = 79,961,368,260.74/369,111.90
  6. Step 6: Final answer
    x = 216,631.78

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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.