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Finding the Fourth Proportional to 250,812.16, 346,130.76 and 137,638.96

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Solution

The fourth proportional to 250,812.16, 346,130.76 and 137,638.96 is: 189,947.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,812.16 : 346,130.76 = 137,638.96 : x
  2. Step 2: Convert to fraction form
    250,812.16/346,130.76 = 137,638.96/x
  3. Step 3: Cross multiply
    250,812.16x = 346,130.76 × 137,638.96
  4. Step 4: Simplify right side
    250,812.16x = 47,641,077,830.41
  5. Step 5: Solve for x
    x = 47,641,077,830.41/250,812.16
  6. Step 6: Final answer
    x = 189,947.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.