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Finding the Fourth Proportional to 360,028.70, 540,043.05 and 138,412.70

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Solution

The fourth proportional to 360,028.70, 540,043.05 and 138,412.70 is: 207,619.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,028.70 : 540,043.05 = 138,412.70 : x
  2. Step 2: Convert to fraction form
    360,028.70/540,043.05 = 138,412.70/x
  3. Step 3: Cross multiply
    360,028.70x = 540,043.05 × 138,412.70
  4. Step 4: Simplify right side
    360,028.70x = 74,748,816,666.74
  5. Step 5: Solve for x
    x = 74,748,816,666.74/360,028.70
  6. Step 6: Final answer
    x = 207,619.05

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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.