Home / 278,145.64-383,710.98-163,386.28

Finding the Fourth Proportional to 278,145.64, 383,710.98 and 163,386.28

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Solution

The fourth proportional to 278,145.64, 383,710.98 and 163,386.28 is: 225,396.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,145.64 : 383,710.98 = 163,386.28 : x
  2. Step 2: Convert to fraction form
    278,145.64/383,710.98 = 163,386.28/x
  3. Step 3: Cross multiply
    278,145.64x = 383,710.98 × 163,386.28
  4. Step 4: Simplify right side
    278,145.64x = 62,693,109,617.35
  5. Step 5: Solve for x
    x = 62,693,109,617.35/278,145.64
  6. Step 6: Final answer
    x = 225,396.70

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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.