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Finding the Fourth Proportional to 313,256.20, 469,970.70 and 155,489.80

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Solution

The fourth proportional to 313,256.20, 469,970.70 and 155,489.80 is: 233,277.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,256.20 : 469,970.70 = 155,489.80 : x
  2. Step 2: Convert to fraction form
    313,256.20/469,970.70 = 155,489.80/x
  3. Step 3: Cross multiply
    313,256.20x = 469,970.70 × 155,489.80
  4. Step 4: Simplify right side
    313,256.20x = 73,075,650,148.86
  5. Step 5: Solve for x
    x = 73,075,650,148.86/313,256.20
  6. Step 6: Final answer
    x = 233,277.59

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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.