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Finding the Fourth Proportional to 385,621.39, 577,678.77 and 265,657.15

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Solution

The fourth proportional to 385,621.39, 577,678.77 and 265,657.15 is: 397,966.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,621.39 : 577,678.77 = 265,657.15 : x
  2. Step 2: Convert to fraction form
    385,621.39/577,678.77 = 265,657.15/x
  3. Step 3: Cross multiply
    385,621.39x = 577,678.77 × 265,657.15
  4. Step 4: Simplify right side
    385,621.39x = 153,464,495,653.71
  5. Step 5: Solve for x
    x = 153,464,495,653.71/385,621.39
  6. Step 6: Final answer
    x = 397,966.76

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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.