Home / 280,411.26-386,975.68-153,095.06

Finding the Fourth Proportional to 280,411.26, 386,975.68 and 153,095.06

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Solution

The fourth proportional to 280,411.26, 386,975.68 and 153,095.06 is: 211,275.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,411.26 : 386,975.68 = 153,095.06 : x
  2. Step 2: Convert to fraction form
    280,411.26/386,975.68 = 153,095.06/x
  3. Step 3: Cross multiply
    280,411.26x = 386,975.68 × 153,095.06
  4. Step 4: Simplify right side
    280,411.26x = 59,244,064,948.14
  5. Step 5: Solve for x
    x = 59,244,064,948.14/280,411.26
  6. Step 6: Final answer
    x = 211,275.63

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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.