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Finding the Fourth Proportional to 288,421.40, 432,707.70 and 110,934.20

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Solution

The fourth proportional to 288,421.40, 432,707.70 and 110,934.20 is: 166,430.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,421.40 : 432,707.70 = 110,934.20 : x
  2. Step 2: Convert to fraction form
    288,421.40/432,707.70 = 110,934.20/x
  3. Step 3: Cross multiply
    288,421.40x = 432,707.70 × 110,934.20
  4. Step 4: Simplify right side
    288,421.40x = 48,002,082,533.34
  5. Step 5: Solve for x
    x = 48,002,082,533.34/288,421.40
  6. Step 6: Final answer
    x = 166,430.38

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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.