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Finding the Fourth Proportional to 315,395.40, 473,168.70 and 105,035.16

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Solution

The fourth proportional to 315,395.40, 473,168.70 and 105,035.16 is: 157,577.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,395.40 : 473,168.70 = 105,035.16 : x
  2. Step 2: Convert to fraction form
    315,395.40/473,168.70 = 105,035.16/x
  3. Step 3: Cross multiply
    315,395.40x = 473,168.70 × 105,035.16
  4. Step 4: Simplify right side
    315,395.40x = 49,699,350,111.49
  5. Step 5: Solve for x
    x = 49,699,350,111.49/315,395.40
  6. Step 6: Final answer
    x = 157,577.92

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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.