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Finding the Fourth Proportional to 228,925.65, 315,937.37 and 133,430.30

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Solution

The fourth proportional to 228,925.65, 315,937.37 and 133,430.30 is: 184,145.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,925.65 : 315,937.37 = 133,430.30 : x
  2. Step 2: Convert to fraction form
    228,925.65/315,937.37 = 133,430.30/x
  3. Step 3: Cross multiply
    228,925.65x = 315,937.37 × 133,430.30
  4. Step 4: Simplify right side
    228,925.65x = 42,155,615,813.47
  5. Step 5: Solve for x
    x = 42,155,615,813.47/228,925.65
  6. Step 6: Final answer
    x = 184,145.45

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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.