Home / 429,453.48-643,915.64-145,117.16

Finding the Fourth Proportional to 429,453.48, 643,915.64 and 145,117.16

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Solution

The fourth proportional to 429,453.48, 643,915.64 and 145,117.16 is: 217,586.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,453.48 : 643,915.64 = 145,117.16 : x
  2. Step 2: Convert to fraction form
    429,453.48/643,915.64 = 145,117.16/x
  3. Step 3: Cross multiply
    429,453.48x = 643,915.64 × 145,117.16
  4. Step 4: Simplify right side
    429,453.48x = 93,443,208,956.38
  5. Step 5: Solve for x
    x = 93,443,208,956.38/429,453.48
  6. Step 6: Final answer
    x = 217,586.34

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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.