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Finding the Fourth Proportional to 371,369.61, 512,490.04 and 201,603.74

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Solution

The fourth proportional to 371,369.61, 512,490.04 and 201,603.74 is: 278,213.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,369.61 : 512,490.04 = 201,603.74 : x
  2. Step 2: Convert to fraction form
    371,369.61/512,490.04 = 201,603.74/x
  3. Step 3: Cross multiply
    371,369.61x = 512,490.04 × 201,603.74
  4. Step 4: Simplify right side
    371,369.61x = 103,319,905,710.29
  5. Step 5: Solve for x
    x = 103,319,905,710.29/371,369.61
  6. Step 6: Final answer
    x = 278,213.14

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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.