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Finding the Fourth Proportional to 286,886.90, 430,330.35 and 207,629.30

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Solution

The fourth proportional to 286,886.90, 430,330.35 and 207,629.30 is: 311,443.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,886.90 : 430,330.35 = 207,629.30 : x
  2. Step 2: Convert to fraction form
    286,886.90/430,330.35 = 207,629.30/x
  3. Step 3: Cross multiply
    286,886.90x = 430,330.35 × 207,629.30
  4. Step 4: Simplify right side
    286,886.90x = 89,349,189,339.26
  5. Step 5: Solve for x
    x = 89,349,189,339.26/286,886.90
  6. Step 6: Final answer
    x = 311,443.95

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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.