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Finding the Fourth Proportional to 377,070, 520,368.76 and 207,316.40

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Solution

The fourth proportional to 377,070, 520,368.76 and 207,316.40 is: 286,103.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,070 : 520,368.76 = 207,316.40 : x
  2. Step 2: Convert to fraction form
    377,070/520,368.76 = 207,316.40/x
  3. Step 3: Cross multiply
    377,070x = 520,368.76 × 207,316.40
  4. Step 4: Simplify right side
    377,070x = 107,880,977,995.66
  5. Step 5: Solve for x
    x = 107,880,977,995.66/377,070
  6. Step 6: Final answer
    x = 286,103.32

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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.