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Finding the Fourth Proportional to 315,360, 473,109.12 and 118,368

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Solution

The fourth proportional to 315,360, 473,109.12 and 118,368 is: 177,577.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,360 : 473,109.12 = 118,368 : x
  2. Step 2: Convert to fraction form
    315,360/473,109.12 = 118,368/x
  3. Step 3: Cross multiply
    315,360x = 473,109.12 × 118,368
  4. Step 4: Simplify right side
    315,360x = 56,000,980,316.16
  5. Step 5: Solve for x
    x = 56,000,980,316.16/315,360
  6. Step 6: Final answer
    x = 177,577.94

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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.