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Finding the Fourth Proportional to 387,392.07, 534,564.33 and 358,827.12

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Solution

The fourth proportional to 387,392.07, 534,564.33 and 358,827.12 is: 495,147.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,392.07 : 534,564.33 = 358,827.12 : x
  2. Step 2: Convert to fraction form
    387,392.07/534,564.33 = 358,827.12/x
  3. Step 3: Cross multiply
    387,392.07x = 534,564.33 × 358,827.12
  4. Step 4: Simplify right side
    387,392.07x = 191,816,178,988.63
  5. Step 5: Solve for x
    x = 191,816,178,988.63/387,392.07
  6. Step 6: Final answer
    x = 495,147.41

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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.