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Finding the Fourth Proportional to 434,998.80, 651,623.40 and 293,281.20

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Solution

The fourth proportional to 434,998.80, 651,623.40 and 293,281.20 is: 439,332.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,998.80 : 651,623.40 = 293,281.20 : x
  2. Step 2: Convert to fraction form
    434,998.80/651,623.40 = 293,281.20/x
  3. Step 3: Cross multiply
    434,998.80x = 651,623.40 × 293,281.20
  4. Step 4: Simplify right side
    434,998.80x = 191,108,892,700.08
  5. Step 5: Solve for x
    x = 191,108,892,700.08/434,998.80
  6. Step 6: Final answer
    x = 439,332.00

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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.