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Finding the Fourth Proportional to 505,417.86, 758,307.30 and 217,108.39

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Solution

The fourth proportional to 505,417.86, 758,307.30 and 217,108.39 is: 325,740.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,417.86 : 758,307.30 = 217,108.39 : x
  2. Step 2: Convert to fraction form
    505,417.86/758,307.30 = 217,108.39/x
  3. Step 3: Cross multiply
    505,417.86x = 758,307.30 × 217,108.39
  4. Step 4: Simplify right side
    505,417.86x = 164,634,874,589.71
  5. Step 5: Solve for x
    x = 164,634,874,589.71/505,417.86
  6. Step 6: Final answer
    x = 325,740.12

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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.