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Finding the Fourth Proportional to 280,805.87, 387,506.39 and 153,482.37

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Solution

The fourth proportional to 280,805.87, 387,506.39 and 153,482.37 is: 211,802.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,805.87 : 387,506.39 = 153,482.37 : x
  2. Step 2: Convert to fraction form
    280,805.87/387,506.39 = 153,482.37/x
  3. Step 3: Cross multiply
    280,805.87x = 387,506.39 × 153,482.37
  4. Step 4: Simplify right side
    280,805.87x = 59,475,398,359.93
  5. Step 5: Solve for x
    x = 59,475,398,359.93/280,805.87
  6. Step 6: Final answer
    x = 211,802.55

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1.5x scale

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.