Home / 388,078.20-535,547.16-218,312.46

Finding the Fourth Proportional to 388,078.20, 535,547.16 and 218,312.46

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Solution

The fourth proportional to 388,078.20, 535,547.16 and 218,312.46 is: 301,270.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,078.20 : 535,547.16 = 218,312.46 : x
  2. Step 2: Convert to fraction form
    388,078.20/535,547.16 = 218,312.46/x
  3. Step 3: Cross multiply
    388,078.20x = 535,547.16 × 218,312.46
  4. Step 4: Simplify right side
    388,078.20x = 116,916,617,945.61
  5. Step 5: Solve for x
    x = 116,916,617,945.61/388,078.20
  6. Step 6: Final answer
    x = 301,270.77

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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.