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Finding the Fourth Proportional to 313,569.80, 470,354.70 and 308,385.80

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Solution

The fourth proportional to 313,569.80, 470,354.70 and 308,385.80 is: 462,578.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,569.80 : 470,354.70 = 308,385.80 : x
  2. Step 2: Convert to fraction form
    313,569.80/470,354.70 = 308,385.80/x
  3. Step 3: Cross multiply
    313,569.80x = 470,354.70 × 308,385.80
  4. Step 4: Simplify right side
    313,569.80x = 145,050,710,443.26
  5. Step 5: Solve for x
    x = 145,050,710,443.26/313,569.80
  6. Step 6: Final answer
    x = 462,578.70

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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.