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Finding the Fourth Proportional to 315,364.59, 435,184.65 and 172,095.84

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Solution

The fourth proportional to 315,364.59, 435,184.65 and 172,095.84 is: 237,482.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,364.59 : 435,184.65 = 172,095.84 : x
  2. Step 2: Convert to fraction form
    315,364.59/435,184.65 = 172,095.84/x
  3. Step 3: Cross multiply
    315,364.59x = 435,184.65 × 172,095.84
  4. Step 4: Simplify right side
    315,364.59x = 74,893,467,896.86
  5. Step 5: Solve for x
    x = 74,893,467,896.86/315,364.59
  6. Step 6: Final answer
    x = 237,482.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.