Home / 430,457.20-645,455.40-180,857.20

Finding the Fourth Proportional to 430,457.20, 645,455.40 and 180,857.20

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Solution

The fourth proportional to 430,457.20, 645,455.40 and 180,857.20 is: 271,189.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,457.20 : 645,455.40 = 180,857.20 : x
  2. Step 2: Convert to fraction form
    430,457.20/645,455.40 = 180,857.20/x
  3. Step 3: Cross multiply
    430,457.20x = 645,455.40 × 180,857.20
  4. Step 4: Simplify right side
    430,457.20x = 116,735,256,368.88
  5. Step 5: Solve for x
    x = 116,735,256,368.88/430,457.20
  6. Step 6: Final answer
    x = 271,189.00

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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.