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Finding the Fourth Proportional to 360,623.81, 495,054.85 and 309,547.87

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Solution

The fourth proportional to 360,623.81, 495,054.85 and 309,547.87 is: 424,939.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,623.81 : 495,054.85 = 309,547.87 : x
  2. Step 2: Convert to fraction form
    360,623.81/495,054.85 = 309,547.87/x
  3. Step 3: Cross multiply
    360,623.81x = 495,054.85 × 309,547.87
  4. Step 4: Simplify right side
    360,623.81x = 153,243,175,124.54
  5. Step 5: Solve for x
    x = 153,243,175,124.54/360,623.81
  6. Step 6: Final answer
    x = 424,939.15

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.