Home / 369,111.40-553,638.30-144,428.20

Finding the Fourth Proportional to 369,111.40, 553,638.30 and 144,428.20

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Solution

The fourth proportional to 369,111.40, 553,638.30 and 144,428.20 is: 216,631.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,111.40 : 553,638.30 = 144,428.20 : x
  2. Step 2: Convert to fraction form
    369,111.40/553,638.30 = 144,428.20/x
  3. Step 3: Cross multiply
    369,111.40x = 553,638.30 × 144,428.20
  4. Step 4: Simplify right side
    369,111.40x = 79,960,983,120.06
  5. Step 5: Solve for x
    x = 79,960,983,120.06/369,111.40
  6. Step 6: Final answer
    x = 216,631.03

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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.