Home / 315,038.20-472,557.30-265,830.70

Finding the Fourth Proportional to 315,038.20, 472,557.30 and 265,830.70

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Solution

The fourth proportional to 315,038.20, 472,557.30 and 265,830.70 is: 398,746.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,038.20 : 472,557.30 = 265,830.70 : x
  2. Step 2: Convert to fraction form
    315,038.20/472,557.30 = 265,830.70/x
  3. Step 3: Cross multiply
    315,038.20x = 472,557.30 × 265,830.70
  4. Step 4: Simplify right side
    315,038.20x = 125,620,237,849.11
  5. Step 5: Solve for x
    x = 125,620,237,849.11/315,038.20
  6. Step 6: Final answer
    x = 398,746.05

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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.