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Finding the Fourth Proportional to 371,684.16, 512,955.36 and 210,590.40

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Solution

The fourth proportional to 371,684.16, 512,955.36 and 210,590.40 is: 290,632.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,684.16 : 512,955.36 = 210,590.40 : x
  2. Step 2: Convert to fraction form
    371,684.16/512,955.36 = 210,590.40/x
  3. Step 3: Cross multiply
    371,684.16x = 512,955.36 × 210,590.40
  4. Step 4: Simplify right side
    371,684.16x = 108,023,474,444.54
  5. Step 5: Solve for x
    x = 108,023,474,444.54/371,684.16
  6. Step 6: Final answer
    x = 290,632.44

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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.