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Finding the Fourth Proportional to 287,001.50, 430,564.54 and 87,316.70

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Solution

The fourth proportional to 287,001.50, 430,564.54 and 87,316.70 is: 130,994.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,001.50 : 430,564.54 = 87,316.70 : x
  2. Step 2: Convert to fraction form
    287,001.50/430,564.54 = 87,316.70/x
  3. Step 3: Cross multiply
    287,001.50x = 430,564.54 × 87,316.70
  4. Step 4: Simplify right side
    287,001.50x = 37,595,475,627.94
  5. Step 5: Solve for x
    x = 37,595,475,627.94/287,001.50
  6. Step 6: Final answer
    x = 130,994.00

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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.