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Finding the Fourth Proportional to 255,315.70, 382,973.55 and 239,569.30

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Solution

The fourth proportional to 255,315.70, 382,973.55 and 239,569.30 is: 359,353.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,315.70 : 382,973.55 = 239,569.30 : x
  2. Step 2: Convert to fraction form
    255,315.70/382,973.55 = 239,569.30/x
  3. Step 3: Cross multiply
    255,315.70x = 382,973.55 × 239,569.30
  4. Step 4: Simplify right side
    255,315.70x = 91,748,705,292.02
  5. Step 5: Solve for x
    x = 91,748,705,292.02/255,315.70
  6. Step 6: Final answer
    x = 359,353.95

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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.