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Finding the Fourth Proportional to 434,466.80, 651,700.20 and 221,890.40

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Solution

The fourth proportional to 434,466.80, 651,700.20 and 221,890.40 is: 332,835.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,466.80 : 651,700.20 = 221,890.40 : x
  2. Step 2: Convert to fraction form
    434,466.80/651,700.20 = 221,890.40/x
  3. Step 3: Cross multiply
    434,466.80x = 651,700.20 × 221,890.40
  4. Step 4: Simplify right side
    434,466.80x = 144,606,018,058.08
  5. Step 5: Solve for x
    x = 144,606,018,058.08/434,466.80
  6. Step 6: Final answer
    x = 332,835.60

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1.5x scale

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.