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Finding the Fourth Proportional to 345,051.72, 473,627.34 and 306,482.76

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Solution

The fourth proportional to 345,051.72, 473,627.34 and 306,482.76 is: 420,686.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,051.72 : 473,627.34 = 306,482.76 : x
  2. Step 2: Convert to fraction form
    345,051.72/473,627.34 = 306,482.76/x
  3. Step 3: Cross multiply
    345,051.72x = 473,627.34 × 306,482.76
  4. Step 4: Simplify right side
    345,051.72x = 145,158,614,374.66
  5. Step 5: Solve for x
    x = 145,158,614,374.66/345,051.72
  6. Step 6: Final answer
    x = 420,686.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.