Home / 425,315.80-637,973.70-214,926.40

Finding the Fourth Proportional to 425,315.80, 637,973.70 and 214,926.40

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Solution

The fourth proportional to 425,315.80, 637,973.70 and 214,926.40 is: 322,389.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,315.80 : 637,973.70 = 214,926.40 : x
  2. Step 2: Convert to fraction form
    425,315.80/637,973.70 = 214,926.40/x
  3. Step 3: Cross multiply
    425,315.80x = 637,973.70 × 214,926.40
  4. Step 4: Simplify right side
    425,315.80x = 137,117,390,635.68
  5. Step 5: Solve for x
    x = 137,117,390,635.68/425,315.80
  6. Step 6: Final answer
    x = 322,389.60

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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.