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Finding the Fourth Proportional to 286,671.30, 429,897.60 and 86,925.30

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Solution

The fourth proportional to 286,671.30, 429,897.60 and 86,925.30 is: 130,354.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,671.30 : 429,897.60 = 86,925.30 : x
  2. Step 2: Convert to fraction form
    286,671.30/429,897.60 = 86,925.30/x
  3. Step 3: Cross multiply
    286,671.30x = 429,897.60 × 86,925.30
  4. Step 4: Simplify right side
    286,671.30x = 37,368,977,849.28
  5. Step 5: Solve for x
    x = 37,368,977,849.28/286,671.30
  6. Step 6: Final answer
    x = 130,354.79

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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.