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Finding the Fourth Proportional to 348,545.40, 521,435.70 and 302,311.80

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Solution

The fourth proportional to 348,545.40, 521,435.70 and 302,311.80 is: 452,268.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,545.40 : 521,435.70 = 302,311.80 : x
  2. Step 2: Convert to fraction form
    348,545.40/521,435.70 = 302,311.80/x
  3. Step 3: Cross multiply
    348,545.40x = 521,435.70 × 302,311.80
  4. Step 4: Simplify right side
    348,545.40x = 157,636,165,051.26
  5. Step 5: Solve for x
    x = 157,636,165,051.26/348,545.40
  6. Step 6: Final answer
    x = 452,268.67

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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.