Home / 280,139.82-386,590.46-152,812.68

Finding the Fourth Proportional to 280,139.82, 386,590.46 and 152,812.68

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Solution

The fourth proportional to 280,139.82, 386,590.46 and 152,812.68 is: 210,880.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,139.82 : 386,590.46 = 152,812.68 : x
  2. Step 2: Convert to fraction form
    280,139.82/386,590.46 = 152,812.68/x
  3. Step 3: Cross multiply
    280,139.82x = 386,590.46 × 152,812.68
  4. Step 4: Simplify right side
    280,139.82x = 59,075,924,255.03
  5. Step 5: Solve for x
    x = 59,075,924,255.03/280,139.82
  6. Step 6: Final answer
    x = 210,880.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.