Finding the Fourth Proportional to 257,863,128.93, 355,881,970.35 and 152,040,497.49
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Solution
The fourth proportional to 257,863,128.93, 355,881,970.35 and 152,040,497.49 is: 209,834,077.65
Step by Step Solution
- Step 1: Write the proportion equation
257,863,128.93 : 355,881,970.35 = 152,040,497.49 : x - Step 2: Convert to fraction form
257,863,128.93/355,881,970.35 = 152,040,497.49/x - Step 3: Cross multiply
257,863,128.93x = 355,881,970.35 × 152,040,497.49 - Step 4: Simplify right side
257,863,128.93x = 54,108,471,819,735,440 - Step 5: Solve for x
x = 54,108,471,819,735,440/257,863,128.93 - Step 6: Final answer
x = 209,834,077.65
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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.