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Finding the Fourth Proportional to 557,412, 836,256.88 and 163,428

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Solution

The fourth proportional to 557,412, 836,256.88 and 163,428 is: 245,182.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,412 : 836,256.88 = 163,428 : x
  2. Step 2: Convert to fraction form
    557,412/836,256.88 = 163,428/x
  3. Step 3: Cross multiply
    557,412x = 836,256.88 × 163,428
  4. Step 4: Simplify right side
    557,412x = 136,667,789,384.64
  5. Step 5: Solve for x
    x = 136,667,789,384.64/557,412
  6. Step 6: Final answer
    x = 245,182.72

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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.