Home / 355,089.60-531,943.20-214,430.40

Finding the Fourth Proportional to 355,089.60, 531,943.20 and 214,430.40

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Solution

The fourth proportional to 355,089.60, 531,943.20 and 214,430.40 is: 321,228.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,089.60 : 531,943.20 = 214,430.40 : x
  2. Step 2: Convert to fraction form
    355,089.60/531,943.20 = 214,430.40/x
  3. Step 3: Cross multiply
    355,089.60x = 531,943.20 × 214,430.40
  4. Step 4: Simplify right side
    355,089.60x = 114,064,793,153.28
  5. Step 5: Solve for x
    x = 114,064,793,153.28/355,089.60
  6. Step 6: Final answer
    x = 321,228.20

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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.