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Finding the Fourth Proportional to 424,740, 586,155 and 243,486.28

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Solution

The fourth proportional to 424,740, 586,155 and 243,486.28 is: 336,018.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,740 : 586,155 = 243,486.28 : x
  2. Step 2: Convert to fraction form
    424,740/586,155 = 243,486.28/x
  3. Step 3: Cross multiply
    424,740x = 586,155 × 243,486.28
  4. Step 4: Simplify right side
    424,740x = 142,720,700,453.40
  5. Step 5: Solve for x
    x = 142,720,700,453.40/424,740
  6. Step 6: Final answer
    x = 336,018.98

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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.