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Finding the Fourth Proportional to 349,550.40, 524,455.20 and 139,339.20

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Solution

The fourth proportional to 349,550.40, 524,455.20 and 139,339.20 is: 209,060.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,550.40 : 524,455.20 = 139,339.20 : x
  2. Step 2: Convert to fraction form
    349,550.40/524,455.20 = 139,339.20/x
  3. Step 3: Cross multiply
    349,550.40x = 524,455.20 × 139,339.20
  4. Step 4: Simplify right side
    349,550.40x = 73,077,168,003.84
  5. Step 5: Solve for x
    x = 73,077,168,003.84/349,550.40
  6. Step 6: Final answer
    x = 209,060.46

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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.