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Finding the Fourth Proportional to 315,487.80, 473,231.70 and 310,303.80

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Solution

The fourth proportional to 315,487.80, 473,231.70 and 310,303.80 is: 465,455.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,487.80 : 473,231.70 = 310,303.80 : x
  2. Step 2: Convert to fraction form
    315,487.80/473,231.70 = 310,303.80/x
  3. Step 3: Cross multiply
    315,487.80x = 473,231.70 × 310,303.80
  4. Step 4: Simplify right side
    315,487.80x = 146,845,594,790.46
  5. Step 5: Solve for x
    x = 146,845,594,790.46/315,487.80
  6. Step 6: Final answer
    x = 465,455.70

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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.