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Finding the Fourth Proportional to 293,289.40, 440,468.70 and 256,547.80

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Solution

The fourth proportional to 293,289.40, 440,468.70 and 256,547.80 is: 385,289.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,289.40 : 440,468.70 = 256,547.80 : x
  2. Step 2: Convert to fraction form
    293,289.40/440,468.70 = 256,547.80/x
  3. Step 3: Cross multiply
    293,289.40x = 440,468.70 × 256,547.80
  4. Step 4: Simplify right side
    293,289.40x = 113,001,275,953.86
  5. Step 5: Solve for x
    x = 113,001,275,953.86/293,289.40
  6. Step 6: Final answer
    x = 385,289.33

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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.