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Finding the Fourth Proportional to 191,507.60, 287,261.40 and 51,280.40

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Solution

The fourth proportional to 191,507.60, 287,261.40 and 51,280.40 is: 76,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,507.60 : 287,261.40 = 51,280.40 : x
  2. Step 2: Convert to fraction form
    191,507.60/287,261.40 = 51,280.40/x
  3. Step 3: Cross multiply
    191,507.60x = 287,261.40 × 51,280.40
  4. Step 4: Simplify right side
    191,507.60x = 14,730,879,496.56
  5. Step 5: Solve for x
    x = 14,730,879,496.56/191,507.60
  6. Step 6: Final answer
    x = 76,920.60

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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.