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Finding the Fourth Proportional to 387,059.40, 534,123.79 and 214,988.52

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Solution

The fourth proportional to 387,059.40, 534,123.79 and 214,988.52 is: 296,674.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,059.40 : 534,123.79 = 214,988.52 : x
  2. Step 2: Convert to fraction form
    387,059.40/534,123.79 = 214,988.52/x
  3. Step 3: Cross multiply
    387,059.40x = 534,123.79 × 214,988.52
  4. Step 4: Simplify right side
    387,059.40x = 114,830,483,108.89
  5. Step 5: Solve for x
    x = 114,830,483,108.89/387,059.40
  6. Step 6: Final answer
    x = 296,674.06

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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.