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Finding the Fourth Proportional to 457,185.12, 630,925.70 and 260,947.69

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Solution

The fourth proportional to 457,185.12, 630,925.70 and 260,947.69 is: 360,113.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,185.12 : 630,925.70 = 260,947.69 : x
  2. Step 2: Convert to fraction form
    457,185.12/630,925.70 = 260,947.69/x
  3. Step 3: Cross multiply
    457,185.12x = 630,925.70 × 260,947.69
  4. Step 4: Simplify right side
    457,185.12x = 164,638,603,976.63
  5. Step 5: Solve for x
    x = 164,638,603,976.63/457,185.12
  6. Step 6: Final answer
    x = 360,113.65

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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.