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Finding the Fourth Proportional to 434,482.60, 651,723.90 and 210,015.40

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Solution

The fourth proportional to 434,482.60, 651,723.90 and 210,015.40 is: 315,023.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,482.60 : 651,723.90 = 210,015.40 : x
  2. Step 2: Convert to fraction form
    434,482.60/651,723.90 = 210,015.40/x
  3. Step 3: Cross multiply
    434,482.60x = 651,723.90 × 210,015.40
  4. Step 4: Simplify right side
    434,482.60x = 136,872,055,548.06
  5. Step 5: Solve for x
    x = 136,872,055,548.06/434,482.60
  6. Step 6: Final answer
    x = 315,023.10

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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.