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Finding the Fourth Proportional to 346,745.28, 477,776.16 and 308,608.32

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Solution

The fourth proportional to 346,745.28, 477,776.16 and 308,608.32 is: 425,227.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,745.28 : 477,776.16 = 308,608.32 : x
  2. Step 2: Convert to fraction form
    346,745.28/477,776.16 = 308,608.32/x
  3. Step 3: Cross multiply
    346,745.28x = 477,776.16 × 308,608.32
  4. Step 4: Simplify right side
    346,745.28x = 147,445,698,073.65
  5. Step 5: Solve for x
    x = 147,445,698,073.65/346,745.28
  6. Step 6: Final answer
    x = 425,227.70

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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.