Home / 287,098.08-430,483.02-87,359.40

Finding the Fourth Proportional to 287,098.08, 430,483.02 and 87,359.40

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Solution

The fourth proportional to 287,098.08, 430,483.02 and 87,359.40 is: 130,989.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,098.08 : 430,483.02 = 87,359.40 : x
  2. Step 2: Convert to fraction form
    287,098.08/430,483.02 = 87,359.40/x
  3. Step 3: Cross multiply
    287,098.08x = 430,483.02 × 87,359.40
  4. Step 4: Simplify right side
    287,098.08x = 37,606,738,337.39
  5. Step 5: Solve for x
    x = 37,606,738,337.39/287,098.08
  6. Step 6: Final answer
    x = 130,989.17

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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.