Home / 286,187.20-429,280.80-99,217.60

Finding the Fourth Proportional to 286,187.20, 429,280.80 and 99,217.60

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Solution

The fourth proportional to 286,187.20, 429,280.80 and 99,217.60 is: 148,826.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,187.20 : 429,280.80 = 99,217.60 : x
  2. Step 2: Convert to fraction form
    286,187.20/429,280.80 = 99,217.60/x
  3. Step 3: Cross multiply
    286,187.20x = 429,280.80 × 99,217.60
  4. Step 4: Simplify right side
    286,187.20x = 42,592,210,702.08
  5. Step 5: Solve for x
    x = 42,592,210,702.08/286,187.20
  6. Step 6: Final answer
    x = 148,826.40

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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.