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Finding the Fourth Proportional to 370,407.60, 555,619.52 and 256,443.12

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Solution

The fourth proportional to 370,407.60, 555,619.52 and 256,443.12 is: 384,670.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,407.60 : 555,619.52 = 256,443.12 : x
  2. Step 2: Convert to fraction form
    370,407.60/555,619.52 = 256,443.12/x
  3. Step 3: Cross multiply
    370,407.60x = 555,619.52 × 256,443.12
  4. Step 4: Simplify right side
    370,407.60x = 142,484,803,241.70
  5. Step 5: Solve for x
    x = 142,484,803,241.70/370,407.60
  6. Step 6: Final answer
    x = 384,670.30

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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.