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Finding the Fourth Proportional to 376,085.57, 564,211.41 and 139,428.26

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Solution

The fourth proportional to 376,085.57, 564,211.41 and 139,428.26 is: 209,173.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,085.57 : 564,211.41 = 139,428.26 : x
  2. Step 2: Convert to fraction form
    376,085.57/564,211.41 = 139,428.26/x
  3. Step 3: Cross multiply
    376,085.57x = 564,211.41 × 139,428.26
  4. Step 4: Simplify right side
    376,085.57x = 78,667,012,347.39
  5. Step 5: Solve for x
    x = 78,667,012,347.39/376,085.57
  6. Step 6: Final answer
    x = 209,173.17

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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.