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Finding the Fourth Proportional to 319,226.70, 478,840.05 and 141,545.10

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Solution

The fourth proportional to 319,226.70, 478,840.05 and 141,545.10 is: 212,317.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,226.70 : 478,840.05 = 141,545.10 : x
  2. Step 2: Convert to fraction form
    319,226.70/478,840.05 = 141,545.10/x
  3. Step 3: Cross multiply
    319,226.70x = 478,840.05 × 141,545.10
  4. Step 4: Simplify right side
    319,226.70x = 67,777,462,761.26
  5. Step 5: Solve for x
    x = 67,777,462,761.26/319,226.70
  6. Step 6: Final answer
    x = 212,317.65

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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.