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Finding the Fourth Proportional to 260,551.32, 390,702.13 and 127,275.54

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Solution

The fourth proportional to 260,551.32, 390,702.13 and 127,275.54 is: 190,852.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,551.32 : 390,702.13 = 127,275.54 : x
  2. Step 2: Convert to fraction form
    260,551.32/390,702.13 = 127,275.54/x
  3. Step 3: Cross multiply
    260,551.32x = 390,702.13 × 127,275.54
  4. Step 4: Simplify right side
    260,551.32x = 49,726,824,574.90
  5. Step 5: Solve for x
    x = 49,726,824,574.90/260,551.32
  6. Step 6: Final answer
    x = 190,852.32

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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.