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Finding the Fourth Proportional to 315,389.80, 473,084.70 and 310,205.80

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Solution

The fourth proportional to 315,389.80, 473,084.70 and 310,205.80 is: 465,308.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,389.80 : 473,084.70 = 310,205.80 : x
  2. Step 2: Convert to fraction form
    315,389.80/473,084.70 = 310,205.80/x
  3. Step 3: Cross multiply
    315,389.80x = 473,084.70 × 310,205.80
  4. Step 4: Simplify right side
    315,389.80x = 146,753,617,831.26
  5. Step 5: Solve for x
    x = 146,753,617,831.26/315,389.80
  6. Step 6: Final answer
    x = 465,308.70

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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.