Home / 286,985.40-430,478.10-247,619.40

Finding the Fourth Proportional to 286,985.40, 430,478.10 and 247,619.40

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Solution

The fourth proportional to 286,985.40, 430,478.10 and 247,619.40 is: 371,429.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,985.40 : 430,478.10 = 247,619.40 : x
  2. Step 2: Convert to fraction form
    286,985.40/430,478.10 = 247,619.40/x
  3. Step 3: Cross multiply
    286,985.40x = 430,478.10 × 247,619.40
  4. Step 4: Simplify right side
    286,985.40x = 106,594,728,835.14
  5. Step 5: Solve for x
    x = 106,594,728,835.14/286,985.40
  6. Step 6: Final answer
    x = 371,429.10

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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.