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Finding the Fourth Proportional to 370,854.60, 556,281.90 and 315,742.20

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Solution

The fourth proportional to 370,854.60, 556,281.90 and 315,742.20 is: 473,613.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,854.60 : 556,281.90 = 315,742.20 : x
  2. Step 2: Convert to fraction form
    370,854.60/556,281.90 = 315,742.20/x
  3. Step 3: Cross multiply
    370,854.60x = 556,281.90 × 315,742.20
  4. Step 4: Simplify right side
    370,854.60x = 175,641,670,926.18
  5. Step 5: Solve for x
    x = 175,641,670,926.18/370,854.60
  6. Step 6: Final answer
    x = 473,613.30

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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.