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Finding the Fourth Proportional to 348,550.40, 521,443.20 and 302,316.80

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Solution

The fourth proportional to 348,550.40, 521,443.20 and 302,316.80 is: 452,276.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,550.40 : 521,443.20 = 302,316.80 : x
  2. Step 2: Convert to fraction form
    348,550.40/521,443.20 = 302,316.80/x
  3. Step 3: Cross multiply
    348,550.40x = 521,443.20 × 302,316.80
  4. Step 4: Simplify right side
    348,550.40x = 157,641,039,605.76
  5. Step 5: Solve for x
    x = 157,641,039,605.76/348,550.40
  6. Step 6: Final answer
    x = 452,276.17

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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.