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Finding the Fourth Proportional to 318,447.93, 477,030.76 and 147,428.58

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Solution

The fourth proportional to 318,447.93, 477,030.76 and 147,428.58 is: 220,846.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,447.93 : 477,030.76 = 147,428.58 : x
  2. Step 2: Convert to fraction form
    318,447.93/477,030.76 = 147,428.58/x
  3. Step 3: Cross multiply
    318,447.93x = 477,030.76 × 147,428.58
  4. Step 4: Simplify right side
    318,447.93x = 70,327,967,563.12
  5. Step 5: Solve for x
    x = 70,327,967,563.12/318,447.93
  6. Step 6: Final answer
    x = 220,846.05

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1.5x scale

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.