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Finding the Fourth Proportional to 210,012.70, 314,937.15 and 91,603.30

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Solution

The fourth proportional to 210,012.70, 314,937.15 and 91,603.30 is: 137,369.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,012.70 : 314,937.15 = 91,603.30 : x
  2. Step 2: Convert to fraction form
    210,012.70/314,937.15 = 91,603.30/x
  3. Step 3: Cross multiply
    210,012.70x = 314,937.15 × 91,603.30
  4. Step 4: Simplify right side
    210,012.70x = 28,849,282,232.60
  5. Step 5: Solve for x
    x = 28,849,282,232.60/210,012.70
  6. Step 6: Final answer
    x = 137,369.23

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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.