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Finding the Fourth Proportional to 243,407.79, 364,223.57 and 143,615.79

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Solution

The fourth proportional to 243,407.79, 364,223.57 and 143,615.79 is: 214,899.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,407.79 : 364,223.57 = 143,615.79 : x
  2. Step 2: Convert to fraction form
    243,407.79/364,223.57 = 143,615.79/x
  3. Step 3: Cross multiply
    243,407.79x = 364,223.57 × 143,615.79
  4. Step 4: Simplify right side
    243,407.79x = 52,308,255,024.09
  5. Step 5: Solve for x
    x = 52,308,255,024.09/243,407.79
  6. Step 6: Final answer
    x = 214,899.68

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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.