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Finding the Fourth Proportional to 387,302.68, 581,013.06 and 197,659.48

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Solution

The fourth proportional to 387,302.68, 581,013.06 and 197,659.48 is: 296,519.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,302.68 : 581,013.06 = 197,659.48 : x
  2. Step 2: Convert to fraction form
    387,302.68/581,013.06 = 197,659.48/x
  3. Step 3: Cross multiply
    387,302.68x = 581,013.06 × 197,659.48
  4. Step 4: Simplify right side
    387,302.68x = 114,842,739,312.81
  5. Step 5: Solve for x
    x = 114,842,739,312.81/387,302.68
  6. Step 6: Final answer
    x = 296,519.35

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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.