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Finding the Fourth Proportional to 385,402, 531,854.76 and 215,668.93

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Solution

The fourth proportional to 385,402, 531,854.76 and 215,668.93 is: 297,623.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,402 : 531,854.76 = 215,668.93 : x
  2. Step 2: Convert to fraction form
    385,402/531,854.76 = 215,668.93/x
  3. Step 3: Cross multiply
    385,402x = 531,854.76 × 215,668.93
  4. Step 4: Simplify right side
    385,402x = 114,704,547,004.61
  5. Step 5: Solve for x
    x = 114,704,547,004.61/385,402
  6. Step 6: Final answer
    x = 297,623.12

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.