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Finding the Fourth Proportional to 370,852.60, 556,278.90 and 315,740.20

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Solution

The fourth proportional to 370,852.60, 556,278.90 and 315,740.20 is: 473,610.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,852.60 : 556,278.90 = 315,740.20 : x
  2. Step 2: Convert to fraction form
    370,852.60/556,278.90 = 315,740.20/x
  3. Step 3: Cross multiply
    370,852.60x = 556,278.90 × 315,740.20
  4. Step 4: Simplify right side
    370,852.60x = 175,639,611,141.78
  5. Step 5: Solve for x
    x = 175,639,611,141.78/370,852.60
  6. Step 6: Final answer
    x = 473,610.30

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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.