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Finding the Fourth Proportional to 354,501, 531,636.48 and 117,780.12

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Solution

The fourth proportional to 354,501, 531,636.48 and 117,780.12 is: 176,631.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,501 : 531,636.48 = 117,780.12 : x
  2. Step 2: Convert to fraction form
    354,501/531,636.48 = 117,780.12/x
  3. Step 3: Cross multiply
    354,501x = 531,636.48 × 117,780.12
  4. Step 4: Simplify right side
    354,501x = 62,616,208,410.78
  5. Step 5: Solve for x
    x = 62,616,208,410.78/354,501
  6. Step 6: Final answer
    x = 176,631.97

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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.