Finding the Fourth Proportional to 261,749,349.70, 392,624,024.55 and 221,438,565.70
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Solution
The fourth proportional to 261,749,349.70, 392,624,024.55 and 221,438,565.70 is: 332,157,848.55
Step by Step Solution
- Step 1: Write the proportion equation
261,749,349.70 : 392,624,024.55 = 221,438,565.70 : x - Step 2: Convert to fraction form
261,749,349.70/392,624,024.55 = 221,438,565.70/x - Step 3: Cross multiply
261,749,349.70x = 392,624,024.55 × 221,438,565.70 - Step 4: Simplify right side
261,749,349.70x = 86,942,100,855,713,584 - Step 5: Solve for x
x = 86,942,100,855,713,584/261,749,349.70 - Step 6: Final answer
x = 332,157,848.55
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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.