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Finding the Fourth Proportional to 212,778.99, 293,648.13 and 117,285.45

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Solution

The fourth proportional to 212,778.99, 293,648.13 and 117,285.45 is: 161,861.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,778.99 : 293,648.13 = 117,285.45 : x
  2. Step 2: Convert to fraction form
    212,778.99/293,648.13 = 117,285.45/x
  3. Step 3: Cross multiply
    212,778.99x = 293,648.13 × 117,285.45
  4. Step 4: Simplify right side
    212,778.99x = 34,440,653,068.71
  5. Step 5: Solve for x
    x = 34,440,653,068.71/212,778.99
  6. Step 6: Final answer
    x = 161,861.15

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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.