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Finding the Fourth Proportional to 258,880.96, 357,254.92 and 145,703.68

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Solution

The fourth proportional to 258,880.96, 357,254.92 and 145,703.68 is: 201,070.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,880.96 : 357,254.92 = 145,703.68 : x
  2. Step 2: Convert to fraction form
    258,880.96/357,254.92 = 145,703.68/x
  3. Step 3: Cross multiply
    258,880.96x = 357,254.92 × 145,703.68
  4. Step 4: Simplify right side
    258,880.96x = 52,053,356,542.11
  5. Step 5: Solve for x
    x = 52,053,356,542.11/258,880.96
  6. Step 6: Final answer
    x = 201,070.63

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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.