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Finding the Fourth Proportional to 360,013.80, 540,020.70 and 220,045.80

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Solution

The fourth proportional to 360,013.80, 540,020.70 and 220,045.80 is: 330,068.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,013.80 : 540,020.70 = 220,045.80 : x
  2. Step 2: Convert to fraction form
    360,013.80/540,020.70 = 220,045.80/x
  3. Step 3: Cross multiply
    360,013.80x = 540,020.70 × 220,045.80
  4. Step 4: Simplify right side
    360,013.80x = 118,829,286,948.06
  5. Step 5: Solve for x
    x = 118,829,286,948.06/360,013.80
  6. Step 6: Final answer
    x = 330,068.70

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1.5x scale

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.