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Finding the Fourth Proportional to 420,368.32, 630,545.84 and 195,603.04

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Solution

The fourth proportional to 420,368.32, 630,545.84 and 195,603.04 is: 293,401.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,368.32 : 630,545.84 = 195,603.04 : x
  2. Step 2: Convert to fraction form
    420,368.32/630,545.84 = 195,603.04/x
  3. Step 3: Cross multiply
    420,368.32x = 630,545.84 × 195,603.04
  4. Step 4: Simplify right side
    420,368.32x = 123,336,683,163.35
  5. Step 5: Solve for x
    x = 123,336,683,163.35/420,368.32
  6. Step 6: Final answer
    x = 293,401.47

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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.