Home / 320,460.12-480,056.15-260,555.47

Finding the Fourth Proportional to 320,460.12, 480,056.15 and 260,555.47

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Solution

The fourth proportional to 320,460.12, 480,056.15 and 260,555.47 is: 390,317.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,460.12 : 480,056.15 = 260,555.47 : x
  2. Step 2: Convert to fraction form
    320,460.12/480,056.15 = 260,555.47/x
  3. Step 3: Cross multiply
    320,460.12x = 480,056.15 × 260,555.47
  4. Step 4: Simplify right side
    320,460.12x = 125,081,255,240.89
  5. Step 5: Solve for x
    x = 125,081,255,240.89/320,460.12
  6. Step 6: Final answer
    x = 390,317.69

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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.