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Finding the Fourth Proportional to 457,088.40, 630,783.75 and 253,134.86

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Solution

The fourth proportional to 457,088.40, 630,783.75 and 253,134.86 is: 349,327.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,088.40 : 630,783.75 = 253,134.86 : x
  2. Step 2: Convert to fraction form
    457,088.40/630,783.75 = 253,134.86/x
  3. Step 3: Cross multiply
    457,088.40x = 630,783.75 × 253,134.86
  4. Step 4: Simplify right side
    457,088.40x = 159,673,354,041.86
  5. Step 5: Solve for x
    x = 159,673,354,041.86/457,088.40
  6. Step 6: Final answer
    x = 349,327.08

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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.