Home / 430,895.60-645,944.88-220,068.80

Finding the Fourth Proportional to 430,895.60, 645,944.88 and 220,068.80

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Solution

The fourth proportional to 430,895.60, 645,944.88 and 220,068.80 is: 329,899.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,895.60 : 645,944.88 = 220,068.80 : x
  2. Step 2: Convert to fraction form
    430,895.60/645,944.88 = 220,068.80/x
  3. Step 3: Cross multiply
    430,895.60x = 645,944.88 × 220,068.80
  4. Step 4: Simplify right side
    430,895.60x = 142,152,314,607.74
  5. Step 5: Solve for x
    x = 142,152,314,607.74/430,895.60
  6. Step 6: Final answer
    x = 329,899.67

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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.