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Finding the Fourth Proportional to 313,038.64, 432,000.72 and 190,488.88

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Solution

The fourth proportional to 313,038.64, 432,000.72 and 190,488.88 is: 262,879.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,038.64 : 432,000.72 = 190,488.88 : x
  2. Step 2: Convert to fraction form
    313,038.64/432,000.72 = 190,488.88/x
  3. Step 3: Cross multiply
    313,038.64x = 432,000.72 × 190,488.88
  4. Step 4: Simplify right side
    313,038.64x = 82,291,333,311.99
  5. Step 5: Solve for x
    x = 82,291,333,311.99/313,038.64
  6. Step 6: Final answer
    x = 262,879.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.