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Finding the Fourth Proportional to 289,330.60, 433,995.90 and 286,706.20

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Solution

The fourth proportional to 289,330.60, 433,995.90 and 286,706.20 is: 430,059.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,330.60 : 433,995.90 = 286,706.20 : x
  2. Step 2: Convert to fraction form
    289,330.60/433,995.90 = 286,706.20/x
  3. Step 3: Cross multiply
    289,330.60x = 433,995.90 × 286,706.20
  4. Step 4: Simplify right side
    289,330.60x = 124,429,315,304.58
  5. Step 5: Solve for x
    x = 124,429,315,304.58/289,330.60
  6. Step 6: Final answer
    x = 430,059.30

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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.