Home / 349,931.40-525,026.70-139,720.20

Finding the Fourth Proportional to 349,931.40, 525,026.70 and 139,720.20

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Solution

The fourth proportional to 349,931.40, 525,026.70 and 139,720.20 is: 209,632.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,931.40 : 525,026.70 = 139,720.20 : x
  2. Step 2: Convert to fraction form
    349,931.40/525,026.70 = 139,720.20/x
  3. Step 3: Cross multiply
    349,931.40x = 525,026.70 × 139,720.20
  4. Step 4: Simplify right side
    349,931.40x = 73,356,835,529.34
  5. Step 5: Solve for x
    x = 73,356,835,529.34/349,931.40
  6. Step 6: Final answer
    x = 209,632.05

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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.