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Finding the Fourth Proportional to 349,745.40, 524,747.70 and 139,534.20

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Solution

The fourth proportional to 349,745.40, 524,747.70 and 139,534.20 is: 209,353.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,745.40 : 524,747.70 = 139,534.20 : x
  2. Step 2: Convert to fraction form
    349,745.40/524,747.70 = 139,534.20/x
  3. Step 3: Cross multiply
    349,745.40x = 524,747.70 × 139,534.20
  4. Step 4: Simplify right side
    349,745.40x = 73,220,250,521.34
  5. Step 5: Solve for x
    x = 73,220,250,521.34/349,745.40
  6. Step 6: Final answer
    x = 209,353.01

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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.