Home / 285,931.40-428,897.10-197,457.80

Finding the Fourth Proportional to 285,931.40, 428,897.10 and 197,457.80

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Solution

The fourth proportional to 285,931.40, 428,897.10 and 197,457.80 is: 296,186.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,931.40 : 428,897.10 = 197,457.80 : x
  2. Step 2: Convert to fraction form
    285,931.40/428,897.10 = 197,457.80/x
  3. Step 3: Cross multiply
    285,931.40x = 428,897.10 × 197,457.80
  4. Step 4: Simplify right side
    285,931.40x = 84,689,077,792.38
  5. Step 5: Solve for x
    x = 84,689,077,792.38/285,931.40
  6. Step 6: Final answer
    x = 296,186.70

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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.