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Finding the Fourth Proportional to 243,354.40, 335,838.63 and 141,378.64

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Solution

The fourth proportional to 243,354.40, 335,838.63 and 141,378.64 is: 195,108.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,354.40 : 335,838.63 = 141,378.64 : x
  2. Step 2: Convert to fraction form
    243,354.40/335,838.63 = 141,378.64/x
  3. Step 3: Cross multiply
    243,354.40x = 335,838.63 × 141,378.64
  4. Step 4: Simplify right side
    243,354.40x = 47,480,408,768.86
  5. Step 5: Solve for x
    x = 47,480,408,768.86/243,354.40
  6. Step 6: Final answer
    x = 195,108.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.