Home / 287,108.71-430,345.91-118,536.10

Finding the Fourth Proportional to 287,108.71, 430,345.91 and 118,536.10

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Solution

The fourth proportional to 287,108.71, 430,345.91 and 118,536.10 is: 177,673.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,108.71 : 430,345.91 = 118,536.10 : x
  2. Step 2: Convert to fraction form
    287,108.71/430,345.91 = 118,536.10/x
  3. Step 3: Cross multiply
    287,108.71x = 430,345.91 × 118,536.10
  4. Step 4: Simplify right side
    287,108.71x = 51,011,525,042.83
  5. Step 5: Solve for x
    x = 51,011,525,042.83/287,108.71
  6. Step 6: Final answer
    x = 177,673.21

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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.